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  1. #1
    3PedalMINI's Avatar
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    Anyone Build a fiberglass "Box"

    Anyone here build a fiberglas box before? Looking at basically making a 3x4x5ft. box for my karavan trailer. Since my trailer splits apart i need a custom design to pull this off and figured fiberglass is maybe the way to go?

    Ive never built anything out of fiberglass before but ive been reading up on it and it seems pretty straight foward. I would gelcoat it to match my skis too! figure the mounting areas and the "floor" would need to be reinforced somehow and would have to come up with a fiberglas lid but it shouldn't be too hard?

    Thoughts? am i crazy?


  2. #2
    Click avatar for tech links/info, donation request K447's Avatar
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    What is the design you want to create?

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    r33pwrd's Avatar
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    I hate working with fiberglass on anything large or that needs to be super smooth / straight.

  4. #4
    Moderator beerdart's Avatar
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    Make a foam mold wrap it in aluminum tape and start glassing.





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  6. #5
    r33pwrd's Avatar
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    That looks good! I'm a metal guy and hate fiberglass unless its the only option!

  7. #6
    3PedalMINI's Avatar
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    Quote Originally Posted by K447 View Post
    What is the design you want to create?
    I wall draw one in paint and post up later today!

    Quote Originally Posted by beerdart View Post
    Make a foam mold wrap it in aluminum tape and start glassing.




    Cool!! how many layers of glass do you use and what OZ? 1 1/2 oz's? I assume the foam acts as reinforcement?

    Another thing im confused about is reinforcing mounting areas and hinge areas. Where im putting hinges can i just put some wood in there and glass over that?

    The hardest part about this im thinking is doing the lid!

  8. #7
    Moderator beerdart's Avatar
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    Just std oz cloth not sure the # the foam is removed after the first few layers. Yes you can glass over the wood for support.

  9. #8
    3PedalMINI's Avatar
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    Quote Originally Posted by beerdart View Post
    Just std oz cloth not sure the # the foam is removed after the first few layers. Yes you can glass over the wood for support.
    Ohh, I see!!did you use any releasing agent or cover the foam completely in foil?

    After you remove the foam do you just keep glassing until you get the desired thickness?

    Thanks for your help! where did you get the fiberglass mats?

  10. #9
    Moderator beerdart's Avatar
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    Yes cover all the foam or the resin will bubble it no release agent it fell out. Yep keep adding layers till the desired thickness. Home Depot.

  11. #10
    Fat Man, Little Boat Region8Ultra250X's Avatar
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    if the box is going to be one piece.... why not just have it bent out of a sheet of metal and have someone weld the seams?

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